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【单选题】
采用紫外线灭菌时，其杀菌力最强的紫外线波长是A.
365nm
B.
250nm
C.
254nm
D.
265nm
E.
286nm
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【简答题】We’re off to California, where the San Diego Zoo and Wild Animal Park is __1__ new ways to _2__wild animals. Here’s a sight you’re likely never to see in the wild. A puppy and a lion cub playing toget...
【简答题】Man’s relationship with animals has always been ambivalent. On the one hand, animals have been w______d (1) and attributed all kinds of m______s (2) and superior powers. On the other hand, they have b...
【单选题】In the space provided, write the letter of the sentence that best expresses the implied main idea of each of the following paragraphs. _____ 1 Many people think there is no difference between an allig...
A.
Poisonous snakes are more dangerous to humans than crocodiles.
B.
Many people believe that alligators and crocodiles are the same.
C.
There are clear differences between alligators and crocodiles.
D.
Alligators aren't particularly dangerous to humans.
【简答题】PDCA的循环的提出者是： A戴明 B盛田昭夫 C松下幸之助 D富兰克林
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